19555056 has 30 divisors (see below), whose sum is σ = 54727400. Its totient is φ = 6518304.

The previous prime is 19555051. The next prime is 19555061. The reversal of 19555056 is 65055591.

It is an interprime number because it is at equal distance from previous prime (19555051) and next prime (19555061).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19555056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19555051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67756 + ... + 68043.

Almost surely, 2^19555056 is an apocalyptic number.

19555056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19555056 is an abundant number, since it is smaller than the sum of its proper divisors (35172344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19555056 is a wasteful number, since it uses less digits than its factorization.

19555056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135813 (or 135804 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 36.

The square root of 19555056 is about 4422.1099036546. The cubic root of 19555056 is about 269.4137072372.

The spelling of 19555056 in words is "nineteen million, five hundred fifty-five thousand, fifty-six".